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comsol教程.pdf

发布时间：2022-06-13 发布人：admin 分类：说明书 资料大小：5.97M 资料格式：pdf 举报 版权申诉
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    Contents
    Introduction
    COMSOL Desktop®
    The Model Builder and the Application Builder
    Running Applications and COMSOL Server
    Preferences
    Creating a New Model
    The Ribbon and Quick Access Toolbar
    The Model Builder and the Model Tree
    Built-In Constants, Variables, and Functions
    The Application Libraries
    Workflow and Sequence of Operations
    Example 1: Structural Analysis of a Wrench
    Example 2: The Busbar — A Multiphysics Model
    Electrical Heating in a Busbar
    Busbar Model Overview
    Advanced Topics
    Appendix A — Building a Geometry
    Creating Parts and Using the Part Libraries
    Appendix B — Keyboard and Mouse Shortcuts
    Appendix C — Language Elements and Reserved Names
    Constants and Parameters
    Variables
    Functions
    Unary and Binary Operators
    Expressions
    Appendix D — File Formats
    COMSOL File Formats
    Supported External File Formats
    Appendix E — Connecting with LiveLink™ Add-Ons
    Index
    INTRODUCTION TO COMSOL Multiphysics
    I n t r o d u c t i o n t o C O M S O L M u l t i p h y s i c s © 1998–2017 COMSOL Protected by patents listed on www.comsol.com/patents, and U.S. Patents 7,519,518; 7,596,474; 7,623,991; 8,457,932; 8,954,302; 9,098,106; 9,146,652; 9,323,503; 9,372,673; and 9,454,625. Patents pending. This Documentation and the Programs described herein are furnished under the COMSOL Software License Agreement (www.comsol.com/comsol-license-agreement) and may be used or copied only under the terms of the license agreement. COMSOL, the COMSOL logo, COMSOL Multiphysics, COMSOL Desktop, COMSOL Server, and LiveLink are either registered trademarks or trademarks of COMSOL AB. All other trademarks are the property of their respective owners, and COMSOL AB and its subsidiaries and products are not affiliated with, endorsed by, sponsored by, or supported by those trademark owners. For a list of such trademark owners, see www.comsol.com/trademarks. Version: COMSOL 5.3a C o n t a c t I n f o r m a t i o n Visit the Contact COMSOL page at www.comsol.com/contact to submit general inquiries, contact Technical Support, or search for an address and phone number. You can also visit the Worldwide Sales Offices page at www.comsol.com/contact/offices for address and contact information. If you need to contact Support, an online request form is located at the COMSOL Access page at www.comsol.com/support/case. Other useful links include: • Support Center: www.comsol.com/support Product Download: www.comsol.com/product-download Product Updates: www.comsol.com/support/updates COMSOL Blog: www.comsol.com/blogs Discussion Forum: www.comsol.com/community Events: www.comsol.com/events COMSOL Video Gallery: www.comsol.com/video Support Knowledge Base: www.comsol.com/support/knowledgebase Part number: CM010004
    Contents Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 COMSOL Desktop® . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Example 1: Structural Analysis of a Wrench. . . . . . . . . . . . . . . 31 Model Wizard. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31 Geometry . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33 Materials . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36 Global Definitions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37 Physics and Boundary Conditions . . . . . . . . . . . . . . . . . . . . . 39 Mesh . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42 Study . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43 Results . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44 Convergence Analysis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47 Example 2: The Busbar — A Multiphysics Model . . . . . . . . . . 54 Model Wizard. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56 Global Definitions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59 Auto Completion and Find for Parameters and Variables . 60 Geometry . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62 Materials . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65 Physics and Boundary Conditions . . . . . . . . . . . . . . . . . . . . . 70 Mesh . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77 Study . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79 Results . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79 | 3
    Building an Application . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 87 Advanced Topics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 98 Parameters, Functions, Variables, and Couplings . . . . . . . . . 98 Material Properties and Material Libraries. . . . . . . . . . . . . . 102 Adding Meshes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 104 Adding Physics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 106 Parametric Sweeps. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 128 Parallel Computing. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 140 COMSOL Multiphysics Client-Server . . . . . . . . . . . . . . . . . 143 Appendix A — Building a Geometry . . . . . . . . . . . . . . . . . . . 146 Appendix B — Keyboard and Mouse Shortcuts . . . . . . . . . . 162 Appendix C — Language Elements and Reserved Names . 166 Appendix D — File Formats . . . . . . . . . . . . . . . . . . . . . . . . . . 180 Appendix E — Connecting with LiveLink™ Add-Ons . . . . . 187 4 |
    Introduction Read this book if you are new to COMSOL Multiphysics®. It provides an overview of the COMSOL® environment with examples that show you how to use the COMSOL Desktop® user interface and the Model Builder. It also provides a quick introduction to creating applications using the Application Builder. If you have not yet installed the software, install it now according to the instructions at www.comsol.com/product-download. In addition to this book, an extensive documentation set is available after installation. Tutorials can be found throughout the COMSOL website, including in the Video Gallery at www.comsol.com/videos and on the COMSOL Blog at www.comsol.com/blogs. | 5
    COMSOL Desktop® QUICK ACCESS TOOLBAR — Use these buttons for access to functionality such as file open/save, undo/redo, copy/paste, and delete. RIBBON — The ribbon tabs have buttons and drop-down lists for controlling all steps of the modeling process. APPLICATION BUILDER — Click this button to switch to the Application Builder and start building an application MODEL BUILDER TOOLBAR MODEL TREE — The model tree gives an overview of the model and all of the functionality and operations needed for building and solving a model as well as processing the results. 6 | MODEL BUILDER — The Model Builder window with its model tree and the associated toolbar buttons gives you an overview of the model. The modeling process can be controlled from context-sensitive menus SETTINGS WINDOW — Click any node in the model tree to see its associated Settings window displayed next to the Model Builder.
    GRAPHICS WINDOW TOOLBAR GRAPHICS WINDOW — The Graphics window presents interactive graphics for the Geometry, Mesh, and Results nodes. Operations include rotating, panning, zooming, and selecting. INFORMATION W1NDOWS — The Information windows will display vital model information during the simulation, such as the solution time, solution progress, mesh statistics, solver logs, and, when available, results tables. | 7
    The screenshot on the previous pages is what you will see when you first start modeling in COMSOL Multiphysics using the Model Builder. The COMSOL Desktop® user interface provides a complete and integrated environment for physics modeling and simulation as well as application design, providing you with the tools necessary to build a user-friendly interface for your models. You can customize the desktop to your own needs. The windows can be resized, moved, docked, and detached. Any changes you make to the layout will be saved when you close the session and available again the next time you open COMSOL Multiphysics. As you build your model, additional windows and widgets will be added. (See page 24 for an example of a more developed desktop.) Among the available windows and user interface components are the following: Quick Access Toolbar The Quick Access Toolbar gives access to functionality such as Open, Save, Undo, Redo, Copy, Paste, and Delete. You can customize its content from the Customize Quick Access Toolbar list (the downward-facing arrow to the right of the toolbar). Ribbon The ribbon at the top of the desktop gives access to commands used to complete most modeling tasks. The ribbon is only available in the Windows® version of the COMSOL Desktop environment and is replaced by menus and toolbars in the OS X and Linux® versions. Click the Application Builder button to switch from the Model Builder to the Application Builder and start building an application based on your model. Settings Window This is the main window for entering all of the specifications of the model, including the dimensions of the geometry, properties of the materials, boundary conditions and initial conditions, and any other information that the solver will 8 |
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